feat: add SVG conversion functionality for raster images and update requirements

frontend/index.html

@@ -6,6 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="description" content="Free online tools for PDF, image, video, and text processing. Merge, split, compress, convert, watermark, protect & more — instantly." />
     <meta name="google-site-verification" content="tx9YptvPfrvb115PeFBWpYpRhw_4CYHQXzpLKNXXV20" />
+    <meta name="msvalidate.01" content="65E1161EF971CA2810FE8EABB5F229B4" />
     <meta name="keywords" content="PDF tools, merge PDF, split PDF, compress PDF, PDF to Word, image converter, free online tools, Arabic PDF tools" />
     <meta name="author" content="Dociva" />
     <meta name="robots" content="index, follow" />